循环图像ffmpeg HLS

Question

尝试循环图像以获得分段的HLS输出.

ffmpeg -loop 1 -i image.png -vcodec libx264 -acodec aac -map 0 -f segment -segment_time 5 -segment_list /seg.m3u8  /200_%06d.ts

  Metadata:
    encoder         : Lavf54.26.101
    Stream #0:0: Video: h264, yuv444p, 1344x840, q=-1--1, 90k tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png -> libx264)
Press [q] to stop, [?] for help
Failed to open bitstream filter h264_mp4toannexb for stream 0 with codec libx264: Invalid argument
[mpegts @ 0x7fe91a615600] H.264 bitstream malformed, no startcode found, use the h264_mp4toannexb bitstream filter (-bsf h264_mp4toannexb)
av_interleaved_write_frame(): Invalid argument

添加过滤器似乎没有帮助.

Answer 1

如错误消息中所示(但未真正解释),将h.264视频数据转换为MPEG2传输流存在问题.在默认的h.264容器(MPEG4)中,事物是长度前缀的,而在MPEG2传输流中,使用起始码.该映射在h.264规范的附件中描述,附件2提到.文件:http://git.videolan.org/？p = fmpeg.git; a = blob; f = doc /bitstream_filters.texi

因此,要正确创建MPEG2 TS,您需要添加-vbsf h264_mp4toannexb到命令行.您可能还需要添加以下参数-flags -global_header.这是为了确保某些编解码器参数包含在带内(在传输流中).